Parsing with line number

[gee4vee]

I'm looking for a way to parse that would also get me line number information for a specific area in the YAML. Would the Documents or CST parsers allow that? To give an example, I'm working on a validator for a specific kind of YAML and I'd like to give the location of the problem along with information about the problem.

[eemeli]

Look for "linecounter" in the docs: https://eemeli.org/yaml/

[gee4vee]

Thanks!

[gee4vee]

@eemeli do you have any examples of using LineCounter? I see it'll give me line and column based on an offset, but how would I know the offset for a particular section of the doc? Do I need to use Parser.parse for that?

[eemeli]

CST nodes provide their offset as an integer, while AST nodes contain range: [start, value-end, node-end] positions.

[the-ricker]

Here is how I solved the problem

let lineCounter = new yaml.LineCounter();
let docs = yaml.parseAllDocuments(Buffer.from(bytes.buffer).toString(), { keepSourceTokens: true, lineCounter: lineCounter});
let api = doc.get('apiVersion') as yaml.Scalar;
let line = lineCounter.linePos(api.range![1]);
console.log("API is " + api.value + " on line " + line[0]);